2003123123 has 2 divisors, whose sum is σ = 2003123124. Its totient is φ = 2003123122.

The previous prime is 2003123099. The next prime is 2003123147. The reversal of 2003123123 is 3213213002.

It is a balanced prime because it is at equal distance from previous prime (2003123099) and next prime (2003123147).

It is a cyclic number.

It is not a de Polignac number, because 2003123123 - 2¹⁶ = 2003057587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2003123323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001561561 + 1001561562.

It is an arithmetic number, because the mean of its divisors is an integer number (1001561562).

Almost surely, 2^2003123123 is an apocalyptic number.

2003123123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003123123 is an equidigital number, since it uses as much as digits as its factorization.

2003123123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2003123123 is about 44756.2635057932. The cubic root of 2003123123 is about 1260.5765235605.

Adding to 2003123123 its reverse (3213213002), we get a palindrome (5216336125).

The spelling of 2003123123 in words is "two billion, three million, one hundred twenty-three thousand, one hundred twenty-three".